1 /* SPDX-License-Identifier: GPL-2.0 */ 1 /* SPDX-License-Identifier: GPL-2.0 */
2 /* 2 /*
3 * include/linux/arch_topology.h - arch specif 3 * include/linux/arch_topology.h - arch specific cpu topology information
4 */ 4 */
5 #ifndef _LINUX_ARCH_TOPOLOGY_H_ 5 #ifndef _LINUX_ARCH_TOPOLOGY_H_
6 #define _LINUX_ARCH_TOPOLOGY_H_ 6 #define _LINUX_ARCH_TOPOLOGY_H_
7 7
8 #include <linux/types.h> 8 #include <linux/types.h>
9 #include <linux/percpu.h> 9 #include <linux/percpu.h>
10 10
11 void topology_normalize_cpu_scale(void); 11 void topology_normalize_cpu_scale(void);
12 int topology_update_cpu_topology(void); 12 int topology_update_cpu_topology(void);
13 13
14 struct device_node; 14 struct device_node;
15 bool topology_parse_cpu_capacity(struct device 15 bool topology_parse_cpu_capacity(struct device_node *cpu_node, int cpu);
16 16
17 DECLARE_PER_CPU(unsigned long, cpu_scale); 17 DECLARE_PER_CPU(unsigned long, cpu_scale);
18 18
19 static inline unsigned long topology_get_cpu_s !! 19 struct sched_domain;
>> 20 static inline
>> 21 unsigned long topology_get_cpu_scale(int cpu)
20 { 22 {
21 return per_cpu(cpu_scale, cpu); 23 return per_cpu(cpu_scale, cpu);
22 } 24 }
23 25
24 void topology_set_cpu_scale(unsigned int cpu, 26 void topology_set_cpu_scale(unsigned int cpu, unsigned long capacity);
25 27
26 DECLARE_PER_CPU(unsigned long, capacity_freq_r !! 28 DECLARE_PER_CPU(unsigned long, freq_scale);
27 29
28 static inline unsigned long topology_get_freq_ !! 30 static inline
>> 31 unsigned long topology_get_freq_scale(int cpu)
29 { 32 {
30 return per_cpu(capacity_freq_ref, cpu) !! 33 return per_cpu(freq_scale, cpu);
31 } 34 }
32 35
33 DECLARE_PER_CPU(unsigned long, arch_freq_scale <<
34 <<
35 static inline unsigned long topology_get_freq_ <<
36 { <<
37 return per_cpu(arch_freq_scale, cpu); <<
38 } <<
39 <<
40 void topology_set_freq_scale(const struct cpum <<
41 unsigned long max <<
42 bool topology_scale_freq_invariant(void); <<
43 <<
44 enum scale_freq_source { <<
45 SCALE_FREQ_SOURCE_CPUFREQ = 0, <<
46 SCALE_FREQ_SOURCE_ARCH, <<
47 SCALE_FREQ_SOURCE_CPPC, <<
48 }; <<
49 <<
50 struct scale_freq_data { <<
51 enum scale_freq_source source; <<
52 void (*set_freq_scale)(void); <<
53 }; <<
54 <<
55 void topology_scale_freq_tick(void); <<
56 void topology_set_scale_freq_source(struct sca <<
57 void topology_clear_scale_freq_source(enum sca <<
58 <<
59 DECLARE_PER_CPU(unsigned long, hw_pressure); <<
60 <<
61 static inline unsigned long topology_get_hw_pr <<
62 { <<
63 return per_cpu(hw_pressure, cpu); <<
64 } <<
65 <<
66 void topology_update_hw_pressure(const struct <<
67 unsigned <<
68 <<
69 struct cpu_topology { 36 struct cpu_topology {
70 int thread_id; 37 int thread_id;
71 int core_id; 38 int core_id;
72 int cluster_id; <<
73 int package_id; 39 int package_id;
>> 40 int llc_id;
74 cpumask_t thread_sibling; 41 cpumask_t thread_sibling;
75 cpumask_t core_sibling; 42 cpumask_t core_sibling;
76 cpumask_t cluster_sibling; <<
77 cpumask_t llc_sibling; 43 cpumask_t llc_sibling;
78 }; 44 };
79 45
80 #ifdef CONFIG_GENERIC_ARCH_TOPOLOGY 46 #ifdef CONFIG_GENERIC_ARCH_TOPOLOGY
81 extern struct cpu_topology cpu_topology[NR_CPU 47 extern struct cpu_topology cpu_topology[NR_CPUS];
82 48
83 #define topology_physical_package_id(cpu) 49 #define topology_physical_package_id(cpu) (cpu_topology[cpu].package_id)
84 #define topology_cluster_id(cpu) (cpu_t <<
85 #define topology_core_id(cpu) (cpu_t 50 #define topology_core_id(cpu) (cpu_topology[cpu].core_id)
86 #define topology_core_cpumask(cpu) (&cpu_ 51 #define topology_core_cpumask(cpu) (&cpu_topology[cpu].core_sibling)
87 #define topology_sibling_cpumask(cpu) (&cpu_ 52 #define topology_sibling_cpumask(cpu) (&cpu_topology[cpu].thread_sibling)
88 #define topology_cluster_cpumask(cpu) (&cpu_ <<
89 #define topology_llc_cpumask(cpu) (&cpu_ 53 #define topology_llc_cpumask(cpu) (&cpu_topology[cpu].llc_sibling)
90 void init_cpu_topology(void); 54 void init_cpu_topology(void);
91 void store_cpu_topology(unsigned int cpuid); 55 void store_cpu_topology(unsigned int cpuid);
92 const struct cpumask *cpu_coregroup_mask(int c 56 const struct cpumask *cpu_coregroup_mask(int cpu);
93 const struct cpumask *cpu_clustergroup_mask(in <<
94 void update_siblings_masks(unsigned int cpu); 57 void update_siblings_masks(unsigned int cpu);
95 void remove_cpu_topology(unsigned int cpuid); 58 void remove_cpu_topology(unsigned int cpuid);
96 void reset_cpu_topology(void); 59 void reset_cpu_topology(void);
97 int parse_acpi_topology(void); 60 int parse_acpi_topology(void);
98 void freq_inv_set_max_ratio(int cpu, u64 max_r <<
99 #endif 61 #endif
100 62
101 #endif /* _LINUX_ARCH_TOPOLOGY_H_ */ 63 #endif /* _LINUX_ARCH_TOPOLOGY_H_ */
102 64
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TOMOYO® is a registered trademark of NTT DATA CORPORATION.